Effects of pulmonary valve replacement on QRS duration and right ventricular cavity size late after repair of right ventricular outflow tract obstruction

Am J Cardiol. 2005 Jun 15;95(12):1511-4. doi: 10.1016/j.amjcard.2005.01.100.

Abstract

This study evaluated the effects of pulmonary valve replacement (PVR) on QRS duration and right ventricular (RV) cavity size in patients who had severe pulmonary regurgitation late after previous repair of RV outflow tract obstruction. A significant decrease in maximal QRS duration and RV end-diastolic volume was found after PVR. The change in QRS duration was most significant in patients with a baseline QRS > or =155 ms (176 +/- 15 to 160 +/- 18 ms, p <0.001). RV end-diastolic volume was significantly correlated with maximal QRS duration before (r = 0.93, p <0.0001) as well as after (r = 0.82, p <0.001) PVR. In patients with pulmonary regurgitation late after repair of RV outflow tract obstruction, PVR reduces maximal QRS duration with a concomitant decrease in RV volumes.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Echocardiography, Doppler
  • Electrocardiography*
  • Female
  • Follow-Up Studies
  • Heart Rate / physiology
  • Heart Valve Prosthesis Implantation* / methods
  • Heart Ventricles / diagnostic imaging*
  • Heart Ventricles / physiopathology
  • Humans
  • Male
  • Middle Aged
  • Postoperative Period
  • Pulmonary Valve / surgery*
  • Pulmonary Valve Insufficiency / diagnostic imaging
  • Pulmonary Valve Insufficiency / etiology
  • Pulmonary Valve Insufficiency / physiopathology
  • Retrospective Studies
  • Severity of Illness Index
  • Treatment Outcome
  • Ventricular Outflow Obstruction / complications
  • Ventricular Outflow Obstruction / physiopathology*
  • Ventricular Outflow Obstruction / surgery